Governing Law and Regulations
Ohio Environmental Protection Agency (Ohio EPA) Division of Air Pollution Control (DAPC)
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. There are many mobile source regulatory requirements implemented nationally by the U.S. Environmental Protection Agency (EPA) that impact mobile sources in Ohio. In addition, the state has established programs to implement optional federal programs and state-specific requirements to control mobile source emissions and make progress toward attainment of all the national ambient air quality standards.
• Administration and enforcement. The Ohio Environmental Protection Agency (Ohio EPA) administers and enforces the mobile source requirements in Ohio.
OAC 3745-26, OAC 3745-80, and ORCA 3704.14
Ohio's inspection and maintenance (I/M) program includes emissions testing and vehicle inspections to detect any tampering designed to bypass, defeat, or render inoperative the vehicle's emissions control systems.
Inspection Area and Applicability
The Ohio vehicle I/M program is known as E-Check, and it applies to all gasoline- and diesel-fueled vehicles, including flexible fuel and hybrid vehicles, that are 25 ...